There is fullness of joy in the indwelling Presence of the Holy Spirit, and this Psalm teaches us that it’s our trust & faith that ushers that joy in. Right before He left the earth, Jesus told His disciples to tarry in Jerusalem for the promised Holy Spirit…and so on the Day of Pentecost, Peter addressed the gathering crowd by quoting David who said, “I saw the Lord always before me. Because He is at my right hand, I will not be shaken.” (Acts 2: 25-28) This joy we have is because the Holy Spirit unites us with God… so that His love is not only demonstrated in us, but that we can become one with Him in exactly the same way Jesus was.