John 3:29
The one who has the bride is the groom; but the best man, who stands up with him and listens to him [take his vows], is very happy when he hears him speak. So, [now] my joy is complete [i.e. over hearing about Jesus' ministry].
1 Corinthians 9:24-26
Do you not know that [although] everyone runs in a race, only one person wins the prize? So, you should run in order to win.
Philippians 3:13-14
Brothers, I consider that I, myself, have not yet taken hold [of Christ's ultimate purpose for me]. But there is one thing that I am doing; I am forgetting about my past [See verses 5-7], and reaching forward to what lies ahead.
Hebrews 12:1-2
Therefore, since we are surrounded by such a large crowd of spectators [Note: Christians are pictured here as being in a crowded arena, performing in the games], we should lay aside every [excessive] weight and sin that so easily entangle us, and with perseverance, we should run the race [of life] that lies before us.