And the angel of the Lord called to Abraham a second time from heaven and said, “By myself I have sworn, declares the Lord , because you have done this and have not withheld your son, your only son, I will surely bless you, and I will surely multiply your offspring as the stars of heaven and as the sand that is on the seashore. And your offspring shall possess the gate of his enemies, and in your offspring shall all the nations of the earth be blessed, because you have obeyed my voice.”
Genesis 22:15‭-‬18 ESV
https://bible.com/bible/59/gen.22.15-18.ESV

Devotional

Healing and Deliverance Are Your Covenant Rights

Then the angel of the Lord called to Abraham out of heaven a second time, and said, “By Myself I have sworn, says the Lord, because you have done this thing, and have not withheld your son, your only son, I will indeed bless you and I will indeed multiply your descendants as the stars of the heavens and as the sand that is on the seashore. Your descendants will possess the gate of their enemies. Through your offspring all the nations of the earth will be blessed, because you have obeyed My voice.”

—Genesis 22:15–18, mev

The whole theme of Scripture is about God’s covenant with man to rescue, restore, heal, and deliver them, even while they have historically and consistently broken their end of the deal. God remains faithful; man is unfaithful. God keeps covenants; man breaks covenants. Healing and deliverance come to those who are in covenant with God—the ones who remain faithful.

If it weren’t for the mercy of God, every covenant violation that we commit today would cause us to be destroyed. Our actions outside of God’s plans for our lives put us in violation of the covenant and open us up to all kinds of evil and torment from the enemy. But God has created a way for us to be delivered out of all our troubles, then healed and restored to a place of authority in Him.

It is through Jesus that we now are also the seed of Abraham. We have been grafted in, and because of this covenant we experience the mercy of God. When we see God acting on behalf of the people of Israel and then we see Jesus healing all those who were sick and casting out demons from those who were oppressed by the devil, we can see these as acts of God’s covenant of mercy.

There Isn’t One Sickness or Disease That Jesus Can’t Heal

When they had come out of the boat, immediately the people recognized Him, and ran throughout the surrounding region, and began to carry the sick on beds to wherever they heard He was. And wherever He entered, into villages, cities, or the country, they laid the sick in the marketplaces and pleaded with Him that they might touch even the fringe of His garment. And as many as touched Him were healed.

—Mark 6:54–56, mev

Physical illness can be one of the worst things that can happen to an individual, and as we read in the Old Testament, Jesus had become acquainted with our sorrows and pain. The compassion that drives Him to heal us comes from His being acquainted with what we suffer as humans. Jesus cares about people. He had no problem breaking man-made religious laws and traditions to see people healed. He had great compassion on the people who came to Him. He wasn’t going to let the Pharisees or any judgmental leaders of His day or our own come between people and their healing.

When Jesus walked the earth, there was nothing that He didn’t heal. When He left, He sent the Holy Spirit, who works in us to experience the fullness of salvation Jesus delivered to us on the cross. Jesus healed every person who came to Him with a disease or sickness—no exceptions.

There is nothing too hard for Him. Don’t let the devil or the doctor tell you that you have something that’s incurable. It might be incurable to the doctor, but it’s not incurable to God. Because of His faithfulness you can trust that if He healed then, He will heal today.

And he went throughout all Galilee, teaching in their synagogues and proclaiming the gospel of the kingdom and healing every disease and every affliction among the people. So his fame spread throughout all Syria, and they brought him all the sick, those afflicted with various diseases and pains, those oppressed by demons, those having seizures, and paralytics, and he healed them. And great crowds followed him from Galilee and the Decapolis, and from Jerusalem and Judea, and from beyond the Jordan.
Matthew 4:23‭-‬25 ESV
https://bible.com/bible/59/mat.4.23-25.ESV