Complex sentence: Burr continued in his pastorship throughout his life, until infirmity forced him to attempt to resign his pastorate in April, 1907; the church voted not to accept his resignation, but to continue the relationship of pastor as long as he lived.
Split into simpler sentences: Burr continued in his pastorship throughout his life, until infirmity forced him to resign his pastorate in April, 1907. The church voted not to accept his resignation, but to continue the relationship of pastor as long as he lived.