2 Corinthians 1 21
It is God that causes us to continue to trust Christ. He does that for us and for you, because we belong to Christ. God has chosen us to serve him.
Compare with other 3 random translations
YLT 2 Corinthians 1:21and He who is confirming you with us into Christ, and did anoint us, is God,
GW 2 Corinthians 1:21God establishes us, together with you, in a relationship with Christ. He has also anointed us.
AMP 2 Corinthians 1:21But it is God Who confirms and makes us steadfast and establishes us [in joint fellowship] with you in Christ, and has consecrated and anointed us [enduing us with the gifts of the Holy Spirit];