The Church of Scotland voted to allow the ordination of ministers in same-sex civil partnerships Saturday in a breakthrough for gay rights.
It is due to vote on Thursday on a separate measure which would allow the ordination of clergy in same-sex marriages.
The move has been pushed through without a major revolt from traditionalists -- the Herald newspaper reported Saturday that only around one in 50 ministers had left the church as a result.
The moderator or chairman of the General Assembly, John Chalmers, will urge it to recognise "the power of harmony" in a speech later.
"We cannot go on suffering the pain of internal attacks which are designed to undermine the work or the place of others," he will say, according to comments released by the Church in advance.
South of the border, the Church of England bans gay clergy from marrying their partners but some bishops have started to question the policy.
It does allow clergy to enter civil partnerships as long as they remain celibate.