Mark 9:22 and 23
The preceding verse talks about a little boy whose sickness often threw him into fire and water to kill him.
Verse 22 reads,
“It has often thrown him into fire or water to kill him. But if you can do anything, take pity on us and help us."
23 “If you can?" said Jesus. "Everything is possible for him who believes."
The man said “if you can???” And JESUS repeated what the man said thus “if you can???” It shows the man's unbelief. Whenever we ask GOD if HE can, indirectly we are saying we don't believe. JESUS made him understand everything is possible for him who believes. Our relationship with GOD should be based on Faith. Without Faith we can't please GOD. Instead of asking GOD if HE can, let's ask Him to do it for us because we believe HE can; we believe HE'S able. We believe nothing is impossible for HIM. Let your Faith work for you.