Above all, my brothers and sisters, don’t swear any oaths, not by heaven or by the earth or by anything else. All you need to say is a simple “Yes” or “No.” If you do more than that, you’ll be found guilty.
With God’s help, we’ve acted toward everyone, and especially toward you, honorably and honestly. We can say that with pride and a clear conscience. We’ve depended on God’s grace and not on the world’s wisdom.
I went because God showed me that he wanted me to go. I met privately with those who are respected as leaders. I presented to them the good news that I preach among the Gentiles. I wanted to be sure that it wasn’t useless for me to keep presenting the good news that way.
He thought that Mary hadn’t been faithful to him. He wanted to follow the law of Moses and didn't want to put her to shame in public. So he planned to break up with her quietly.