The parents of Timothy never circumcised him, but when Paul took the young man with him, Paul circumcised him because his mother was Jewish and Jews in the area knew that, and they would not have received Timothy as a teacher of God.
However, when certain men entered the church, teaching that it is necessary for men to be circumcised to be saved, Paul resisted them and said this about his coworker Titus, who was not Jewish,
“Yet not even Titus who was with me, being a Greek, was compelled to be circumcised” (Galatians 2:3).
There is a time to bend and a time not to bend. Learn from the Scriptures to know when to do which one, and pray to God for the wisdom to know the appropriate time for each.