In 1886, Cook expanded the mission to the southern tip of Malaya in Johor Bahru to minister to the Teochew Chinese community. This work was supported by a prominent Johor businessman and the son-in-law of Keasberry, James Meldrum, who helped obtain a land grant for the church building from Sultan Abu Bakar of Johor who was a former student of Keasberry. Work was expanded to Muar in 1892 with the Rev. Liau Thian Ek as the first pastor.
