They describe the greatness of the reward -- it is absolutely the best gift Jesus could ever bestow. The gift is greater far than we can ever imagine.

They also tell us regarding the occasion on which we shall receive this gift -- it is when the Son of man shall come in the glory of his Father with his angels.

Read these verses below -- they are packed so full of promise.

Matthew 5:12
Rejoice, and be exceeding glad: for great is your reward in heaven...
Matthew 16:27
For the Son of man shall come in the glory of his Father with his angels; and then he shall reward every man according to his works.
Luke 6:23
Rejoice ye in that day, and leap for joy: for, behold, your reward is great in heaven...
John 14:1-3
Do not be troubled: you believe in God, believe also in me.
In my Father's house are many mansions... I go to prepare a place for you. And if I go and prepare a place for you, I will come again, to receive you to myself; so that where I am, there you may be also.
1 Corinthians 2:9
It is written, "Eye has not seen, nor ear heard, neither has entered into the heart of man, the things which God has prepared for them that love him."
Colossians 3:24
You shall receive the reward of the inheritance from the Lord: for you serve the Lord Christ.
Hebrews 10:35-37
35 Do not lose your confidence, because you do have a very great reward.
36 Be patient - because after having done the will of God, you will receive the promise.
37 For in yet a little while, he that shall come will come, and will not tarry.
Revelation 11:17-18
We thank You, O Lord God Almighty because You have exercised Your great power, and have reigned.
The nations are angry; and the time of Your wrath has come. It is time for the dead to be judged, and for You to reward Your servants the prophets, and the saints, and those who fear Your name; and to destroy those who destroy the earth.
Revelation 22:12
Behold, I come quickly, my reward is with me...

The reward is great. It is bestowed when Jesus comes again in glory and gives us immortality.