The Apostle Paul
Ephesians 2:18ESV·traditional attribution

For through him we both have access in one Spirit to the Father.

John Calvin Reformed @genevareformer

18. For through him we both have access. This is an argument from the fact, that we are permitted to draw near to God. But it may be viewed also as an announcement of peace; for wicked men, lulled into a profound sleep, sometimes deceive themselves by false notions of peace, but are never at rest, except when they have learned to forget the Divine...

Matthew Henry Presbyterian @wholebiblehenry

We have now come to the last part of the chapter, which contains an account of the great and mighty privileges that converted Jews and Gentiles both receive from Christ. The apostle here shows that those who were in a state of enmity are reconciled. Between the Jews and the Gentiles there had been a great enmity; so there is between God and every unregenerate man.

Commenting on Ephesians 2:14-22

John Gill Reformed Baptist @doctorgill

For through him we both have an access, That is, both Jews and Gentiles; the Arabic version reads, "we both factions": being made one, and reconciled unto God, and having the Gospel of peace preached to both, they have through Christ freedom of access and boldness in it: by one Spirit unto the Father: they may come to God as the Father of spirits, and...