'Gain' in the Bible

For [although I] am free from all [people], I have enslaved myself to all, in order that I may gain more.

I have become like a Jew to the Jews, in order that I may gain the Jews. To those under the law [I became] as under the law ([although I] myself am not under the law) in order that I may gain those under the law.

To those outside the law [I became] as outside the law ([although I] am not outside the law of God, but subject to the law of Christ) in order that I may gain those outside the law.

To the weak I became weak, in order that I may gain the weak. I have become all [things] to all [people], in order that by all means I may save some.