1) If Christ has not risen....
a) Our faith is in vain

1 Corinthians 15:14,17 NIV
14 And if Christ has not been raised, our preaching is useless and so is your faith. 15 More than that, we are then found to be false witnesses about God, for we have testified about God that he raised Christ from the dead. But he did not raise him if in fact the dead are not raised. 16 For if the dead are not raised, then Christ has not been raised either. 17 And if Christ has not been raised, your faith is futile; you are still in your sins.

b) Our hope would be hopeless

1 Corinthians 15:18-19
18 Then those also who have fallen asleep in Christ are lost. 19 If only for this life we have hope in Christ, we are of all people most to be pitied.

c) Our life will lack purpose

1 Corinthians 15:30-32
30 And as for us, why do we endanger ourselves every hour? 31 I face death every day—yes, just as surely as I boast about you in Christ Jesus our Lord. 32 If I fought wild beasts in Ephesus with no more than human hopes, what have I gained? If the dead are not raised,

2) Because Christ is risen...
a) Material gains should not matter

Matthew 6:19-21
19 “Do not store up for yourselves treasures on earth, where moths and vermin destroy, and where thieves break in and steal. 20 But store up for yourselves treasures in heaven, where moths and vermin do not destroy, and where thieves do not break in and steal. 21 For where your treasure is, there your heart will be also.

b) Our trials do not compare to eternity

2 Corinthians 4:8-9,14,16-18
8 We are hard pressed on every side, but not crushed; perplexed, but not in despair; 9 persecuted, but not abandoned; struck down, but not destroyed.

c) Death in Christ is gain

Philippians 1:20-21
20 I eagerly expect and hope that I will in no way be ashamed, but will have sufficient courage so that now as always Christ will be exalted in my body, whether by life or by death. 21 For to me, to live is Christ and to die is gain.