It was revealed to them that they were not serving themselves but you, when they spoke of the things that have now been told you by those who have preached the gospel to you by the Holy Spirit sent from heaven. Even angels long to look into these things.
NIV
It was then disclosed to them that the services they were rendering were not meant for themselves and their period of time, but for you. [It is these very] things which have now already been made known plainly to you by those who preached the good news (the Gospel) to you by the [same] Holy Spirit sent from heaven. Into these things [the very] angels long to look!
AMP
Unto whom it was revealed, that not unto themselves, but unto us they did minister the things, which are now reported unto you by them that have preached the gospel unto you with the Holy Ghost sent down from heaven; which things the angels desire to look into.
KJV
Offer hospitality to one another without grumbling.
NIV
Practice hospitality to one another (those of the household of faith). [Be hospitable, be a lover of strangers, with brotherly affection for the unknown guests, the foreigners, the poor, and all others who come your way who are of Christ's body.] And [in each instance] do it ungrudgingly (cordially and graciously, without complaining but as representing Him).
AMP
Use hospitality one to another without grudging.
KJV
However, if you suffer as a Christian, do not be ashamed, but praise God that you bear that name.
NIV
But if [one is ill-treated and suffers] as a Christian [which he is contemptuously called], let him not be ashamed, but give glory to God that he is [deemed worthy to suffer] in this name.
AMP
Yet if any man suffer as a Christian, let him not be ashamed; but let him glorify God on this behalf.
KJV
Do not repay evil with evil or insult with insult. On the contrary, repay evil with blessing, because to this you were called so that you may inherit a blessing.
NIV
Never return evil for evil or insult for insult (scolding, tongue-lashing, berating), but on the contrary blessing [praying for their welfare, happiness, and protection, and truly pitying and loving them]. For know that to this you have been called, that you may yourselves inherit a blessing [from God--that you may obtain a blessing as heirs, bringing welfare and happiness and protection].
AMP
Not rendering evil for evil, or railing for railing: but contrariwise blessing; knowing that ye are thereunto called, that ye should inherit a blessing.
KJV
Trying to find out the time and circumstances to which the Spirit of Christ in them was pointing when he predicted the sufferings of Christ and the glories that would follow.
NIV
They sought [to find out] to whom or when this was to come which the Spirit of Christ working within them was indicating when He predicted the sufferings of Christ and the glories that should follow [them].
AMP
Searching what, or what manner of time the Spirit of Christ which was in them did signify, when it testified beforehand the sufferings of Christ, and the glory that should follow.
KJV