A.T. Robertson Commentary Hebrews 12:14

"Follow after peace with all men, and the sanctification without which no man shall see the Lord:" — Hebrews 12:14 (ASV)

Follow after peace (ειρηνην διωκετε). Give peace a chase as if in a hunt.

With all men (μετα παντων). Like Paul's use of διωκω with ειρηνην in Ro 14:19 and his to εξ υμων (so far as proceeds from you) in 12:18. This lesson the whole world needs including Christians.

Sanctification (αγιασμον). Consecration as in 1 Thessalonians 4:7; Romans 6:19, etc.

Without which (ου χωρις). Ablative case of the relative with χωρις (post positive here). About seeing God compare Mt 5:8 where we have καθαρο.