John Gill Commentary 1 Timothy 5:1

"Rebuke not an elder, but exhort him as a father; the younger men as brethren:" — 1 Timothy 5:1 (ASV)

Ver. 1. Rebuke not an elder
By whom is meant, not an elder 1 Timothy 5:2

The elder women as mothers
When they offend in any point, they are to be reasoned, and argued, and pleaded with, as children should with their mothers; see (Hosea 2:2) and are to be considered as mothers in Israel, and to be treated with great tenderness and respect.

The younger as sisters ;
using the freedom as a brother may with a sister; and considering them as sisters in Christ, and in a way becoming the relation, tell them their faults freely and privately, but with all purity :

in such manner as to preserve chastity in looks, in words, and actions.