EFORE JESUS returned to heaven after His resurrection (after He rose from the dead) He commanded His disciples to wait for the infilling of the Holy Spirit.  When we are born again (receive salvation) we receive a portion of God's Spirit; receiving that Spirit is what saves us.  But God wants to give us the fullness of His Spirit!  This comes when we surrender fully to God's working in us.

The first sign of the Holy Spirit's infilling, the experience after salvation, is the gift of personal tongues.  That is, the gift of being able to speak to God in an angels' language.  But the first most important result of  His infilling is God's developing in us the, "fruit of the Spirit:"

The FIRST-most important result of the Holy Spirit's infilling:

The Fruit of the Holy Spirit     - Galatians 5:22-23.

• Love

• Joy

• Peace

• Patience

• Kindness

• Goodness

• Faithfulness

• Meekness

• Self-control                  

This list is describes the very personality and nature of Jesus, and is what God wants to develop in us: it is what will bring God the most glory!  Being born again initiates this process of becoming more like Jesus, as we at that point receive a portion of the Holy Spirit (part of God), and the process is made fully-functional and, "brought up to speed," with the Holy Spirit's infilling.

      In addition to fruit, which bring greater glory to God (our primary responsibility and privilege), the Holy Spirit's infilling also provides the Christian with gifts, which enable God to minister to those around us with far greater effectiveness.  These are:

   The SECOND-most important result of the Holy Spirit's infilling:

The Gifts of the Holy Spirit     - I Cor. 12:8-11, 28

• words of wisdom,

• words of knowledge

• faith

• gifts of healings

• miracles

• prophecy

• discerning of spirits

• different kinds of tongues

• the interpretation of tongues:

• apostles

• prophets

• teachers

• helps

• governments           

So important was the infilling that Jesus commanded His disciples, freshly-taught, trained, experienced, and anxious to get ministering, to remain in Jerusalem until they received this most essential component of Christianity of all: the Holy Spirit Infilling (also called, "The Baptism of the Holy Spirit").  This is why Jesus told His disciples:

16 He that believeth and is baptized shall be saved; but he that believeth not shall be damned.
17 And these signs shall follow them that believe; In MY NAME shall they cast out devils; they shall speak with new tongues;
18 They shall take up serpents; and if they drink any deadly thing, it shall not hurt them; they shall lay hands on the sick, and they shall recover.

Mark 16:16-18

    Many Christians have not experienced the Holy Spirit's Infilling and do not believe that it is for the modern-day Christian.  As their churches do not recognize the experience, they cannot take the new Christian on in his Spiritual life to the point at which they have received everything God has promised to bless them with, and be able to serve God to the full extent that He intends!  It is essential to find a church body to attend that does indeed believe in the doctrine, and that can help you mature in God!  Churches that do obey God's command, and so do help their people move forward in Spiritual maturity in this area, are usually referred to by such terms as:

v     Charismatic

v      Spirit-Filled

v     or various other, regionally unique names.

Also, the following terms are also sometimes used, but may refer more specifically to a particular Denomination (organized churches) [if you ask for a church, using one of the following adjectives, you may be told that one of those churches is not in the area, when in fact there are Spirit-filled, or Charismatic churches to which you could be directed]:

v      Pentecostal

v      Full-Gospel

v      Apostolic

v      Holiness

v      and other, regionally-unique names or Groups.  
              
Find one of these churches to attend; they will help you develop in your Spiritual maturity completely.  They will not exclude an absolutely essential part of your relationship with God!