'In Christ' in the Bible

Now Moses was faithful in [the administration of] all God’s house, [but only] as a ministering servant, [his ministry serving] as a testimony of the things which were to be spoken afterward [the revelation to come in Christ];

but Christ is faithful as a Son over His [Father’s] house. And we are His house if we hold fast our confidence and sense of triumph in our hope [in Christ].

For we only participate in Christ provided that we keep firm to the very end the confidence with which we started,

so that you will not be [spiritually] sluggish, but [will instead be] imitators of those who through faith [lean on God with absolute trust and confidence in Him and in His power] and by patient endurance [even when suffering] are [now] inheriting the promises.