The Power Of Prayer To The Lord: James 5:14-16, 1 John 5:14-15, Mark 11:24
James 5:14-16
14 Is anyone among you sick? Let him call for the elders of the church, and let them pray over him, anointing him with oil in the name of the Lord. 15 And the prayer of faith will save the one who is sick, and the Lord will raise him up. And if he has committed sins, he will be forgiven. 16 Therefore, confess your sins to one another and pray for one another, that you may be healed. The prayer of a righteous person has great power as it is working.[a]
1 John 5:14-15
14 And this is the confidence that we have toward him, that if we ask anything according to his will he hears us. 15 And if we know that he hears us in whatever we ask, we know that we have the requests that we have asked of him.
Mark 11:24
24 Therefore I tell you, whatever you ask in prayer, believe that you have received[a] it, and it will be yours.
Sidewalks Chalk 
Dear Lord,
O God who are the only source of health and healing,
the Spirit of calm
and the central peace of this universe,
grant to me such a consciousness of Your indwelling
and surrounding presence
that I may permit You
to give me health and strength and peace,
through Jesus Christ our Lord.
in this I pray
Amen.