John 14: 13, 14

13 And I will do whatever you ask in my name, so that the Father may be glorified in the Son.
14 You may ask me for anything in my name, and I will do it.

I promise to continue doing the works I have been doing among you, even after I've returned to the Father. I will keep doing things for you and give you what you ask for.
When I give you what you need, it is really the Father in me doing His work, so whenever He does it, He is glorified through me. Only God could do the things you see me doing.
After I am gone, you will do the same works that you see me doing. In fact, you will do greater works than me because when you pray in my Name and ask for help I will answer and enable you to do "greater" things.
In the same way the Father is in me, working in me, I will be in you and work in you. When the Father is working in me, and when I am working in you, all of it brings glory to God the Father.
The glory of God is His presence. God's presence is evidenced when His works are done in me and in you.
My greatest joy and desire is God's glory, so anything that will bring glory to Him is what I want to do.
That is why I am encouraging you to ask me for anything in agreement and harmony with who I am and what I want to do. This gives me another opportunity to glorify my Father. The more you ask for the more I can do the more God the Father is glorified.
God knows that the more dependent you are on Him the better off you are. He created you to be in a dependent relationship with Him. You function at your best when you are rightly relating to Him. God has designed you to give praise, honor, respect & glory to Him.
God has made you to be at your best when you are humble, submissive, yielded, obedient, and fully reliant upon Him. The sin in the Garden was to act independently from God and become your own gods, full of pride and arrogance.
It is the sin of pride that resists needing me and having to ask me for anything. It is a sign of faith, trust and belief that you ask me for things. It means you believe I can give it to you, thereby exercising faith in me. Faith pleases God the Father. Without it you cannot please Him. (see Hebrews)
You believe in God, believe also in me. (repeat theme of vs. 1)
He delights in you and you delight in Him in return. That is LOVE.
Asking Him for things is the best reminder that you need Him.
Apart from Him even I can do nothing. I cannot be apart from Him, I cannot act independently from Him because we are One. And in my bodily form I demonstrate that I can do nothing without Him - because I have laid aside my equality with God and willingly subjected myself to a position of great need and dependence on God. This arrangement is for your benefit.
I can sympathize with your weaknesses. I need to rely on God's power and strength like you do. I became a man so you would know that I know how you feel.
When you ask me to do something, you can be sure I will do whatever is in harmony with my Father's purposes. I do not say that I "might" do it, or would "consider" doing it, or even that I "am capable" of doing it, but rather, I tell you that I "will" do it. When you ask for something, in my name, then it will bring glory to the Father. It is, therefore, my joy and pleasure and great honor to do it.