I don’t know whether that’s my favorite verse or not (I cite it often enough 
), but it is a very important verse (Hebrews 12:21). So we could say present love and future joy were his motivations?
1 The first part2 of it also speaks to paying attention – what we pay attention to is a continuous moral choice that we make, and that couldn’t be more important. It has all kinds of implications about our mood and happiness, responding to temptation and how we converse, among other things. Oh yeah, and remembering the good things God has done for us as individuals and throughout all of history in his providential interventions.
Let us fix our eyes on Jesus, the author and perfecter of our faith, who for the joy set before Him…
Hebrews 12:2
2 (Can you put a footnote on a footnote? Yes, obviously. 
) The latter part of the verse speaks to perseverance:
…who for the joy set before Him endured the cross, scorning its shame, and sat down at the right hand of the throne of God.
As the shame and ignominy of the cross did not deter him (let alone its pain!) and because of the sure hope and confidence3 we can have in Jesus, neither should we be deterred by what we are given to endure. (Did I mention that it is an important verse? […I don’t care who wrote Hebrews or when.])
3 It’s not a maybe or a Pascalian wager.