Four main streams Firstly, there is the Bible, the collection of writings agreed collectively by the Churches as believed to be specially revealing of the way of God for the world.
Secondly, there is the collective mind of the Churches as hammered out in discussion which have taken place over the centuries as Christians and their leaders have sought to interpret and apply past understanding to changing contexts and cultures.
Thirdly, there is the individual Christian’s own sense of God in their own conscience within themselves.
And, there is the fourth, the capacity for reasoned thinking which is also understood as God-given, for Christian belief is that God is neither contrary to reason nor irrational.
The tendency to absolutise Christians regard the Bible as ‘the Word of God’ and may well be powerfully ‘grabbed’ by who they find there. However, this is different from treating every verse within the Bible as infallibly true and to be used in justification of any particular argument or decision. Christians regard the Church or church tradition as highly indicative of how best Christians should believe and behave. However, this is different from treating every previous utterance of a Pope or other church leader as infallibly authoritative and determining exactly of all believing and behaving. Christians have a strong sense of Conscience as pointer to what is right or wrong. However, this is different from treating any sense of guilt or pointer to how to respond as necessarily the only relevant consideration. That Christians also recognise that Reason is God given – at the root of all scientific and artistic exploration and discovery – should perhaps prompt a realisation that all three of these resources deserve to be heeded together.
Indicative examples of different modes of moral thinking These portraits relate to human behaviour generally and also across different religious traditions: https://www.moralcapital.info/thinking-modes-for-moral-judgement.