The legitimate sources of evidence that verify our relationship with God from your list include:
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Love for others - This is often seen as a reflection of one’s relationship with God, as many religious teachings emphasize love and compassion as central to faith.
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Holy Spirit - Many religious traditions, particularly in Christianity, believe that the Holy Spirit acts as a guide and a source of assurance of one's relationship with God.
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Changed lives - Transformations in behavior, attitudes, and perspectives can be powerful evidence of a relationship with God.
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Bible - For many believers, the Bible serves as foundational evidence for understanding and verifying their relationship with God, as it contains teachings, commandments, and narratives that guide faith.
While emotions can be a part of one's experience of faith, they can be subjective and vary widely, so they are less reliable as a source of evidence compared to the others listed.
So the answers are: love for others, Holy Spirit, changed lives, and Bible.