The On-High Calling by T Austin-Sparks and published by Classics.
“Wherefore, holy brethren, partakers of a heavenly calling” (Hebrews 3:1).
“For we are become partakers of Christ, if we hold fast the beginning of our confidence firm unto the end” (Hebrews 3:14).
Our first thing to do is to consider briefly the one word which is going to stand over all our meditations. It is the word which occurs in each of the verses above cited: the word 'partakers'. The Greek word so translated occurs some five times in this Letter to the Hebrews: 1:9; 3:1,14; 6:4; 12:8. In Luke 5:7 it is translated ‘partners’, and other translations are ‘fellows’, ‘companions’. There are also other variations of the same original word or root.
Having looked carefully into the original meaning I have come to the conclusion that its truest and deepest meaning is ‘companions’. Therefore I have taken this to define and govern all that we shall consider in these chapters. ‘Companions of Christ’: ‘Companions of a heavenly calling’.