Matthew 22:31 But as touching the resurrection of the dead, have ye not read that which was spoken unto you by God, saying, 32 I am the God of Abraham, and the God of Isaac, and the God of Jacob? God is not the God of the dead, but of the living.
Again at the time Jesus had said that, it was true, but since His ascension, is why those who die in the great tribulation are in Heaven as all unresurrected but saved saints are for missing out the rapture event for not abiding in Him as His disciples.
Mat 24:29 Immediately after the tribulation of those days shall the sun be darkened, and the moon shall not give her light, and the stars shall fall from heaven, and the powers of the heavens shall be shaken:
Mat 24:30 And then shall appear the sign of the Son of man in heaven: and then shall all the tribes of the earth mourn, and they shall see the Son of man coming in the clouds of heaven with power and great glory.
Mat 24:31 And he shall send his angels with a great sound of a trumpet, and they shall gather together his elect from the four winds, from one end of heaven to the other.
John 5:28 Marvel not at this: for the hour is coming, in the which
all that are in the graves shall hear his voice,
John 5:29 And shall come forth; they that have done good, unto the resurrection of life; and they that have done evil, unto the resurrection of damnation.
There is only one resurrection when Christ returns on the last day after the seven trumpets of God's great wrath, but two final destinations.
Again at the time Jesus had said that, it was true, but since His ascension, is why those who die in the great tribulation are in Heaven as all unresurrected but saved saints are for missing out the rapture event for not abiding in Him as His disciples.
The word of God has never changed since the ascension of Christ who now sits at the right hand of the Father in the third heaven. If Jesus said it, I believe it.
1Th 4:13 But I would not have you to be ignorant, brethren, concerning them which are asleep, that ye sorrow not, even as others which have no hope.
1Th 4:14 For if we believe that Jesus died and rose again, even so them also which sleep in Jesus will God bring with him.
1Th 4:15 For this we say unto you by the word of the Lord, that we which are alive and remain unto the coming of the Lord shall not prevent them which are asleep.
1Th 4:16
For the Lord himself shall descend from heaven with a shout, with the voice of the archangel, and with the trump of God: and the dead in Christ shall rise first:
1Th 4:17
Then we which are alive and remain shall be caught up together with them in the clouds, to meet the Lord in the air: and so shall we ever be with the Lord.
1Th 4:18 Wherefore comfort one another with these words.
This is referring to being absent from the Lord Jesus Christ that we do not see yet but when we die, we will in Heaven.
He is in us,
2 Corinthians 13:5 & is with us always
Matthew 28:20 for why in context of your reference is about being absent from seeing Him but when we die, we will see Him in Heaven.
The physical body is the house to the sin nature that dwells in it and if we are not walking in the Spirit then we are walking in the flesh being absent from fellowshipping with the Lord like Adam did when he fell to the lust of the flesh as he disobeyed God's command not to eat of that tree.
Gal 5:16 This I say then, Walk in the Spirit, and ye shall not fulfil the lust of the flesh.
Gal 5:17 For the flesh lusteth against the Spirit, and the Spirit against the flesh: and these are contrary the one to the other: so that ye cannot do the things that ye would.
Gal 5:18 But if ye be led of the Spirit, ye are not under the law.
Gal 5:19 Now the works of the flesh are manifest, which are these; Adultery, fornication, uncleanness, lasciviousness,
Gal 5:20 Idolatry, witchcraft, hatred, variance, emulations, wrath, strife, seditions, heresies,
Gal 5:21 Envyings, murders, drunkenness, revellings, and such like: of the which I tell you before, as I have also told you in time past, that they which do such things shall not inherit the kingdom of God.
Gal 5:22 But the fruit of the Spirit is love, joy, peace, longsuffering, gentleness, goodness, faith,
Gal 5:23 Meekness, temperance: against such there is no law.
Gal 5:24 And they that are Christ's have crucified the flesh with the affections and lusts.
Gal 5:25 If we live in the Spirit, let us also walk in the Spirit.
Gal 5:26 Let us not be desirous of vain glory, provoking one another, envying one another.