But watch thou in all things, endure afflictions, do the work of an evangelist, make full proof of thy ministry.
But ... thou - in contrast to the false teachers (2 Timothy 3:10). I am no longer on the spot to withstand these things: be thou a worthy successor, no longer depending on me for counsel, but swimming without the corks (Calvin).
Watch, х neefe (G3525)] - 'with the wakefulness of one sober
In all things - on all occasions and under all circumstances (Titus 2:7).
Evangelist - a missionary bishop or preacher subordinate to the apostles (Acts 16:3).
Make full proof of - fulfill all its requirements (Acts 12:25; Romans 15:19; Colossians 4:17.