しんshinずるzuru
1.

To hold a conviction about something without doubt, strongly accepting it as true in one's mind, often motivating actions based on that belief.

2.

To regard someone or something as reliable and trustworthy, creating a relationship built on confidence and reliance.

3.

To revere and submit oneself to a deity or spiritual entity, embodying a sense of faith and devotion in religious practices.

Example:

見ることは信ずることなり。