So a sign is usually indicative of something and is often looked out for. For example, a rainbow may indicate changes in season, a thunder may signal a coming storm.
If believers are to lay hands on the sick to recover, then there is healing power in a believers hand (in the name of Jesus). But how best to prove this except by acting on it.

What we do with the promises of God is to claim them. So the next time you sing this song, carefully make it into a confession, that Jehovah is the God who heals you, He sent His Word and healed all your diseases. That is the right Spirit with which to sing that song.

Is healing instantaneous or can it be delayed sometimes?
Jesus said :”healing is the children’s bread” (Mark 7:25-30).
Bread(food) should be taken in daily for sustenance. Bread should be available always because it is a basic human need.
So according to Jesus, healing is bread for the children, it is available always…. Healing us available for today.

Now let’s assume that you owed someone $20,000 and you couldn’t see how you’d offset that bill for the rest of your life. Now assume again, that a good Samaritan, a philanthropist, someone who has amassed a lot of wealth generously offers to pay off your debt, and does so. Suddenly you are debt-free. Is it likely that you’d go back to your previous creditor asking to remain a debtor to him? Unlikely.

Don’t let the enemy steal your faith. Just like a soldier’s shield, position/keep the Word of God always before you.
Alternatives to faith will deny you the opportunity to experience the supernatural and rob you of a full joy. 
Take that faith leap, endure the temporary pain or discomfort, alternatives will only keep delaying your miracle. 

Healing confessions are no good if we lack the conviction that we are already healed. Our confessions and partaking in communion do not in themselves bring healing, they are ways in which we further proclaim and maintain that we are healed.

‘I BELIEVE’ is All Jesus ever looked for in order to heal (John 9:35, Mark 11:24, James 2:19, John 11:26, etc).

Be of good cheer, Jesus is in you

Jesus knew that it didn’t matter how long He took to get to Lazarus as He would simply wake him up. Afterall, He is the “Resurrection & Life”. So no fuss, no threat, and no need to hurry