Genesis 45:12

Your eyes see. Although Joseph had now spoken for several minutes, his brothers were so overwhelmed that to convince them of the reality of the whole affair, Joseph was obliged to point out that they could see for themselves that what he said was true. Only when Joseph embraced his brothers and kissed them was the spell broken. Now they regained control over their emotions and were able to converse with him. When he had revealed himself in the role of a loving brother and not of an offended judge, and by his kisses and tears had given them assurance of complete forgiveness, a truth that words could not have expressed so well, only then did they dare to speak.