The Gospel is from John 16:16-20.  Jesus said to His disciples: "A little while and you will no longer see me, and again a little while later and you will see me." What a promise!  These words must have brought them a great deal of comfort.  Of course, they did see Jesus again when He appeared to them in the upper room.
But the "seeing" Jesus was speaking of here meant more than just encountering Him again with their physical eyes.  He was also talking about the way the Holy Spirit would help them sense Jesus' presence and His guidance even after He had ascended and was no longer visible to them.  On our own, we could never grasp the price that Jesus paid for our salvation or the depth of His love for us.  We need the spirit to open the eyes of our heart so that we can receive the grace to live out Jesus' commands.  Without the Holy Spirit, we limit both our understanding and our actions.
So what did the apostles do after Jesus was taken away from them and they could no longer see Him?  Looking forward to the fulfillment of His promise, they prayed.  They searched the Scriptures.  They cried out, "Come Holy Spirit!"
So let's follow their example.  From now until Pentecost, dive into Scripture, fix your eyes on Jesus, and try to increase your prayer.  Ask for the grace to see Jesus with new eyes, the eyes of the Holy Spirit.
"Come Holy Spirit!  Open the eyes of our hearts!"