"If you are reviled for the name of Christ, you are blessed, because the spirit of glory, which is the Spirit of God, is resting on you." (1 Peter 4: 14)
Long-suffering is a fruit of the Holy Spirit. Long-suffering, that is patience is the unmistakable sign of the presence of the Holy Spirit in a soul. Other fruits of the Holy Spirit are: love, joy, peace, kindness, goodness, faithfulness, gentleness and self-control.
While some of the fruits of the Holy Spirit can be counterfeited, long-suffering cannot be faked. Paul said that while signs and wonders follow the apostle, long-suffering is the unmistakable sign of the apostle.
O Holy Spirit, O Spirit of glory, grant me abundance of long-suffering.