Jesus said, “If you had known Me, you would have known My Father also; from now on you know Him and have seen Him.” (John 14:7 NASB)...
“I will ask the Father, and He will give you another Helper, that He may be with you forever;” (John 14:16 NASB)
Jesus’ words must have been just as confusing to His disciples as they are to us.
That God can be one and at the same time three is hard to grasp. When the Irish couldn’t understand the concept of the trinity, St. Patrick used a shamrock to illustrate how three can be one.
God uses marriage as an illustration. One man, one woman and one God over all, united as one yet remaining individuals. Each has a distinct role and personality, but they are to be united as one in thought and purpose. There is to be a mutual sharing and helping. Each one’s focus is to be on the other’s benefit. There is to be intimacy, loyalty, comfort and security.
God, in His mercy and grace, has revealed Himself in His word as Father - powerful and sovereign, yet personal and knowable. He has revealed Himself in Jesus as our hope for reconciliation and salvation. He has given His Spirit as our counselor, helper and comforter.
Although we cannot completely understand, we can trust and know that God is as He says - Three in One.