A.T. Robertson Commentary Romans 14:11

"For it is written, As I live, saith the Lord, to me every knee shall bow, And every tongue shall confess to God." — Romans 14:11 (ASV)

As I live (ζω εγω). "I live." The LXX here (Isaiah 45:23) has κατ' εμαυτου ομννυω, "I swear by myself."

Shall confess to God (εξομολογησετα τω θεω). Future middle of εξομολογεω, to confess openly (εξ) with the accusative as in Mt 3:6. With the dative as here the idea is to give praise to, to give gratitude to (Matthew 11:25).