Jesus breathed on the disciples and said, "Receive the Holy Spirit." (John 20:22) Yet, He also told them not to depart from Jerusalem but to wait on the Promise of the Father - the baptism in the Holy Spirit that came on the Day of Pentecost (Acts 2:1-13)
The book of Hebrews contains various themes to encourage its readers to have a closer walk with God. "Let us" is one of those...
There are secrets in the kingdom of God that He wants you to discover; life changing hidden truths that He equipped and blessed you...