What is the Holy Trinity?

The Holy Trinity is God the Father, God the Son (Jesus), and God the Holy Spirit all as one being. How God can exist in three different forms and still be one God can be somewhat confusing. Many examples on Earth can help to mentally digest this concept. For example, time is in the form of past, present, and future. In any of these three forms, time is time. Likewise, all objects on this Earth have three distinct dimensions of length, width, and height. All three dimensions describe the objects. Yet the best example is the different phases of matter. All matter must be in the form of a solid, liquid, or gas. Where water is the liquid, ice is the solid, and steam is the gas, H2O is H2O regardless of what phase the H2O is in. The same is true of God. Each form of the Trinity is co-equal with the others. They work in perfect harmony.

And while H2O was shown in the example above, it is the only substance on Earth that exists naturally in all three phases of matter. In my opinion, this is the reason Christians are baptized using water. Not only is water plentiful and necessary for life, but it is representative of three forms able to co-exist in perfect harmony. And the person performing the baptism will do so in the Name of the Father, the Son, and the Holy Spirit.

Father, Son, Holy Spirit
"Therefore go and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit."
Matthew 28:19

Furthermore, to answer the question of "Who raised Jesus from the Dead?" it was the Holy Trinity.

God Raised Jesus
"But God raised him from the dead on the third day and caused him to be seen."
Acts 10:40

Jesus Raised Himself
"Jesus answered them, 'Destroy this temple, and I will raise it again in three days.'"
John 2:19

The Holy Spirit Raised Jesus
"And if the Spirit of him who raised Jesus from the dead is living in you, he who raised Christ from the dead will also give life to your mortal bodies through his Spirit, who lives in you."
Romans 8:11

I am convinced that we will not fully understand how truly awesome our Heavenly Father is until we meet Him face to face in His Glory. We must have faith in God's Word, which is captured in the Holy Bible through the Old Testament Prophets and the New Testament Apostles over thousands of years.