I don't advise mixing bard + cleric with a third class unless you really do not care about spells in your spellbook.
For saving throws, bard and cleric train 2/3 as primary so that's pretty neat, but the feat investment into WM means little room to take all the other saving the feats.
A bard/cleric without a decent spellbook selection is going to be sitting at scores of 13/13/12/13/14/13 STR/DEX/CON/INT/WIS/CHA as a bare minimum if you wanted to get things like Power attack / Divine might/shield and future points put into charisma to use these with weapon-master. You could lower CON more to put into other abilities but HP is important for something that's taking classes that will only output 8 & 6 HP per level.
You need 8 cleric, 5 bard to get the feats required (bonus feats on 2nd, 5th, 8th levels of the individual classes), 14 Wis gets you all the lvl 4 spells you'd have access to. Then last 7 levels are WM. Might need to withhold bard lvl 5 until lvl 17 to put the tumble in then.
8/4 then 4 WM lvls, 1 bard, last 3 WM lvls.
You'd be very reliant on Divine Power to get your attack up but 2x lvl 4 spells + 2x lvl 4 spellslots rings means you have 4 uses of that so it's not all doom & gloom.
I don't really advise this multiclass because there's too many compromises, but some people enjoy that.
Alternatively if bard is your dump class then 10 cleric 1 bard 5wm 1 bard 1 cleric 2 wm works as well.