Pastor Roshan Mahesen also spoke of his commitment to continue the church's mission.
Speaking in London this week Pastor Roshan said: "We are hurt. We are angry also, but still, as the senior pastor of Zion Church Batticaloa, the whole congregation and every family affected, we say to the suicide bomber, and also to the group that sent the suicide bomber, that we love you and we forgive you, no matter what you have done to us, we love you, because we believe in the Lord Jesus Christ.
"Jesus Christ on the Cross, he said father forgive them for they do not know what they are doing. We also, who follow the footsteps of Jesus Christ, we say, for the Lord forgive these people."
In the video shared by Sri Lankan Christian ministry 'The Life', Pastor Roshan said: "I want to take this opportunity to thank every church around the world, every believer, every person known to me and unknown to me who has contacted me, calling me, sending messages of condolences, and then words of encouragement.
"I want to thank you from the bottom of my heart, every word you speak brings such comfort and strength. We will stand and continue what the lord has purposed in our life and we are ready, and we will continue to fulfil the mission the Lord has given us."
Pastor Roshan was interviewed by Pastor Chrishanthy Sathiyaraj, a leader of a Sri Lankan church with Tamil and Sinhalese Christians.
Pastor Chrishanthy, who is also part of the Evangelical Alliance's council, commented: "These atrocious attacks have shocked the world, the violence has impacted my friends and family and many in the Sri Lankan community in the UK know people who have died.
"If only we can hear Pastor Roshan's words and respond with forgiveness instead of hate. Jesus Christ calls us to love even those who persecute us, and what is more powerful than to choose to love in circumstances such as these. Let's forgive, stand together and build the kingdom of God. Don't give up."
Responding to the video Steve Clifford, general director of the Evangelical Alliance, said: "I am mourning with my Sri Lankan brothers and sisters in Christ as they bury loved ones, as church communities are shaken by the violence inflicted on them and as others live in fear that the same might strike them.
"Pastor Roshan offers love and forgiveness that can only come from knowing that we are forgiven by Jesus. I will continue to pray for him and all the believers in Sri Lanka, that they will know hope in Jesus that overcomes all fear."
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