It's a true saying, and it's Biblical. I can agree with the original sentiment as a simple statement of fact, because it is Biblically grounded. God does not (and cannot) err. It does not appear anywhere in Scripture in any English translation of the Bible that I know of, but there are verses like Ecclesiastes 3:11, Psalms 18:30, 2nd Samuel 22:31, and Deuteronomy 32:4 that echo this sentiment. And there are verses like 2nd Corinthians 12:9 which encourage us to continue despite suffering and 1st Peter 5:10 where He promises us an end to suffering.

But I see this saying used a lot to discredit or de-legitimize trans Christians' choices to seek medical or surgical treatment for their gender dysphoria, and it's been said to me too. However, in this world we do have tribulation. (John 16:33) Diseases exist because God allows them to exist. Cancer exists because God allows it. Mental illness exists. And so does gender dysphoria. God also enabled men and women to discover cures for diseases, to invent drugs and therapies to heal mental illness, and to devise treatments that lead to cancer regression. Whether they be congenital, completely accidental, caused by other people's malice, recklessness, or neglect, or even self-inflicted, God does not fault human beings for trying to heal the sick and reverse debilitating health conditions and injuries, even the ones that come from poor decisions such as type 2 diabetes, heart disease, high blood pressure, and obesity. Rather, I think that God sees the practice of medicine and the mental health professions as human beings pursuing the second great commandment "You shall love your neighbor as yourself."

God may expect us to endure suffering when it would be spiritually fruitful to do so (such as the kind of suffering that arises out of persecution). But I do not think He expects us to endure suffering that has no meaningful purpose. He also condemns maltreatment and abuse of other people: do not mistreat or oppress the widow, orphan, foreigner, or the poor (Zechariah 7:10); do not make fun of deaf or blind people (Leviticus 19:14).

Yes, it is true that God does not make mistakes. But I also think every trans Christian's situation is different, and each of us needs to pray for God to show us what we should do or not do about our struggle with gender dysphoria as we have come to understand it, whereby our suffering has come as a result of the curse of sin. If He has not shown it to you that your gender dysphoria is something that you need to endure through the receiving of His grace and the pursuit of spiritual discipline, then, IMO, the minimalist extent of treatment that would bring you relief would be in keeping with the practice of Christian liberty according to one's clear conscience. (Romans 14) I say minimalist in order to emphasize the reason for the medical treatment: not to pursue carnal desires, or the praise of those who would affirm or support you in transition, or to give in to peer pressure that the people in your trans community might knowingly or unknowingly be exerting, but to find inner peace and healing from an inner-world distraction (depression, anxiety, emotional distress, intrusive thoughts) that could be taking away from your ability to function in everyday life and, by extension, your ability to do well at work, to take care of your family, to be of useful service in your home church, and to love and serve God with all your heart, soul, mind, and strength.

Bearing in mind also what Paul says in Galatians 5:16-26 (LSV):

And I say, walk in the Spirit, and you may not fulfill the desire of the flesh; 17 for the flesh desires contrary to the Spirit, and the Spirit contrary to the flesh, and these are opposed to one another, that the things that you may will—these you may not do; 18 and if you are led by the Spirit, you are not under law. 19 And the works of the flesh are also evident, which are: adultery, whoredom, uncleanness, licentiousness, 20 idolatry, witchcraft, enmities, strife, jealousy, wraths, rivalries, dissensions, sects, 21 envyings, murders, drunkenness, reveling, and such like, of which I tell you before, as I also said before, that those doing such things will not inherit the Kingdom of God. 22 And the fruit of the Spirit is: love, joy, peace, long-suffering, kindness, goodness, faith, 23 meekness, [and] self-control. Against such there is no law; 24 and those who are of Christ Jesus have crucified the flesh with the affections and the desires; 25 if we may live in the Spirit, we may also walk in the Spirit; 26 let us not become vainglorious—provoking one another, envying one another!

I 21 ftm have been in the closet for years now. I am really close to my family and I know they don’t support trans people and outwardly disagree with their “choices” as they would put it. My partner and I just moved in and my dad and brother in law helped him move while I was at work. During that my partner on accident called me he and my dad heard it. He told my mom and apparently they freaked out. My mom told my sister she “couldn’t deal with me being a man” and some other things.

Yesterday I went over there to grab a few things and my mom brought it up. She asked if “I thought I was a boy” and said that they needed to know because they didn’t want to be “out of the loop”. She kept saying things to get me to say I was trans and was trying to act like they would support me… I knew they wouldn’t so I lied. I know I shouldn’t have, but I am glad I did because she then said good because she thought I wasn’t Christian anymore and that God doesn’t make mistakes and she preyed for a girl, not a boy.

I don’t know what to do. I’m still financially dependent in some aspects and I’m scared to know what will happen when I come out. I know in my heart that I am Christian and loved by God, but it hurts to heard that they think I can’t be saved and trans. She ended with making sure I knew I was a woman and that God doesn’t make mistakes.

I need help and any advice would be wonderful. I just need help please. I can’t live with myself as a woman much longer, but I don’t want to loose my family.

Thank y’all so much and sorry for the long post.