So we see Jesus Himself making the claim that if He be Lifted up, meaning His death, that He would cause or draw all to Himself, all types of People. The word draw is the greek word helkō and means:
to draw, drag off
2) metaph., to draw by inward power, lead, impel
It means to lead by an inward power ! And what is this Power ? Lets look at Zech 4:6
Then he answered and spake unto me, saying, This is the word of the LORD unto Zerubbabel, saying, Not by might, nor by power, but by my spirit, saith the LORD of hosts.
Yes, thats right, the Power is the Holy Spirit of God, which is given in the New Birth, it is He which leads men unto Faith in Christ.
Ps 110:3
3 Thy people shall be willing in the day of thy power, in the beauties of holiness from the womb of the morning: thou hast the dew of thy youth.
In the Day of Christ's Power, His People shall be made willing, that is the Day when His Spirit is sent to them to give them New Life, To convince them of Sin Jn 16:8-10.
Its in this day that the word of God Preached to them comes with the Holy Ghost and so with Power 1 Thess 1:5
For our gospel came not unto you in word only, but also in power, and in the Holy Ghost, and in much assurance; as ye know what manner of men we were among you for your sake.
Believing, and Hope comes through the Power of the Holy Ghost Rom 15:13
Now the God of hope fill you with all joy and peace in believing, that ye may abound in hope, through the power of the Holy Ghost.
That word power is the greek word dynamis and means:
strength power, ability
a) inherent power, power residing in a thing by virtue of its nature, or which a person or thing exerts and puts forth
b) power for performing miracles
c) moral power and excellence of soul
You see, this is needed because by nature, the elect of God are without strength Rom 5:6
For when we were yet without strength, in due time Christ died for the ungodly.
So Christ by dying, He provides the strength that His People need by supplying them with the Holy Ghost in their New Birth, and He , the Holy Ghost leads Them into all Truth Jn 16:13, and of course in doing so, He guides them to Christ who is The Truth Jn 14:6
6Jesus saith unto him, I am the way, the truth, and the life: no man cometh unto the Father, but by me.
So you see, the lifting up of Christ upon the cross, His death, produced the effect of the work of The Holy Ghost. Remember after His ascension, it is stated that He received of His Father the Promise of the Holy Ghost Acts 2:3357
Therefore being by the right hand of God exalted, and having received of the Father the promise of the Holy Ghost, he hath shed forth this, which ye now see and hear.
Why do you think He received of the Holy Ghost ? Because of the results He was to effect in all the People He was died for, whom He was lifted up in behalf of. Thats what they heard and saw on the day of Pentecost when souls were made alive and desired to be instructed in the things of God, They were being drawn to Christ, to believe in Him. This I say is an accomplishment of Christ death. Jn 12:32