How do we know that Jesus was truly happy?

Jesus embodies true happiness in His perfect obedience to God's will, as stated in Isaiah 53:3. Despite being described as 'a man of sorrows, and acquainted with grief,' His fulfillment of God’s mission brings Him joy. This joy is not dependent on earthly circumstances but rather on His commitment to redeeming His people. His happiness originates from knowing He is accomplishing the will of His Father, fulfilling the prophecy of a suffering servant while simultaneously securing salvation for those He loves. Therefore, His happiness stands in stark contrast to human notions of happiness, which are often fleeting and superficial.