2 Peter 1:14
knowing that [I will] soon put off my "tent" [i.e., I will soon die], even as our Lord Jesus Christ made clear to me.
2 Timothy 4:6
For I am already being "poured out like a drink offering," and the time for me to leave has come. [Note: Paul here likens the prospect of shedding his blood for the work of Christ to the pouring of wine and oil on an Old Testament sacrifice].
John 21:18-19
Truly, truly, I tell you [Peter], when you were young you used to fasten your belt around you [i.e., to get ready] and travel wherever you wanted to go. But when you are old, you will stretch out your hands and someone else will tie you up and take you [away] to where you do not want to go."
Acts 20:25
Now look, I know that none of you, among whom I traveled on preaching missions, will ever see my face again.