@peaceful23, you are right to say that it is “normally the will of God to heal his people”; but sometimes he leaves pain, emotional or physical, as our “thorn in the flesh” that Paul talks about in his life, to teach us very valuable lessons:
2Co 12:7 So to keep me from becoming conceited because of the surpassing greatness of the revelations, a thorn was given me in the flesh, a messenger of Satan to harass me, to keep me from becoming conceited.
2Co 12:8 Three times I pleaded with the Lord about this, that it should leave me.
2Co 12:9 But he said to me, “My grace is sufficient for you, for my power is made perfect in weakness.” Therefore I will boast all the more gladly of my weaknesses, so that the power of Christ may rest upon me.
2Co 12:10 For the sake of Christ, then, I am content with weaknesses, insults, hardships, persecutions, and calamities. For when I am weak, then I am strong.
Of course, we all look forward to the final healing of our bodies in our resurrections after Jesus returns.
Php 3:20 But our citizenship is in heaven, and from it we await a Savior, the Lord Jesus Christ,
Php 3:21 who will transform our lowly body to be like his glorious body, by the power that enables him even to subject all things to himself.
Rev 21:1 Then I saw a new heaven and a new earth, for the first heaven and the first earth had passed away, and the sea was no more.
Rev 21:2 And I saw the holy city, new Jerusalem, coming down out of heaven from God, prepared as a bride adorned for her husband.
Rev 21:3 And I heard a loud voice from the throne saying, “Behold, the dwelling place of God is with man. He will dwell with them, and they will be his people, and God himself will be with them as their God.
Rev 21:4 He will wipe away every tear from their eyes, and death shall be no more, neither shall there be mourning, nor crying, nor pain anymore, for the former things have passed away.”
Rev 21:5 And he who was seated on the throne said, “Behold, I am making all things new.” Also he said, “Write this down, for these words are trustworthy and true.”
Rev 21:6 And he said to me, “It is done! I am the Alpha and the Omega, the beginning and the end. To the thirsty I will give from the spring of the water of life without payment.
Rev 21:7 The one who conquers will have this heritage, and I will be his God and he will be my son.
The key promise for me in Revelation 21:4 is that there will be no more pain.