'Wrestling' in the Bible

But I entreat you, brethren, in the name of our Lord Jesus Christ and by the love which His Spirit inspires, to help me by wrestling in prayer to God on my behalf,

Epaphras, who is one of yourselves, a bondservant of Jesus Christ, sends greetings to you, always wrestling on your behalf in his prayers, that you may stand firm--Christians of ripe character and of clear conviction as to everything which is God's will.

and here is the motive of our toiling and wrestling, because we have our hopes fixed on the ever-living God, who is the Saviour of all mankind, and especially of believers.