1 Corinthians 15:25

For he must reign, till he hath put all enemies under his feet (KJV)

Then: Paul's explanation takes a step backward to the Corinthian present. Jesus will reign on earth in the hearts of men for a time. All enemies must be put under his feet. Elsewhere (II Peter 3:9), Peter reminds believers that Christ delays because he wants no one to perish. The Corinthians also had many friends they wished would repent and come to eternity. "Enemies under his feet" reminds Paul and probably some of the Corinthians of Jehovah's intent to make a footstool of all enemies (Psalm 110:1). Baker and other commentators look to the explicated meaning in Matthew 22:44 to understand more of Paul's intent.

Now: Jesus' parable of the five young women who had enough oil for their lamps and five who did not also reveals there will be a time of waiting. Matthew Henry calls this a mediatorial age in which the saints absolutely know resurrection is ahead. Paul's explanation of why we wait is helpful.

Extra Source: Cornerstone Biblical Commentary 1 Corinthians (William Baker), 2 Corinthians (Ralph Martin & Carl Toney), ed. by Philip Comfort. Carol Stream: Tyndale House Publishers, c2006.
Commentary on the Whole Bible Acts to Revelation Vol VI by Matthew Henry online at http://www.ccel.org/ccel/henry/mhc6.iCor.xvi.html