From the Watchtower November 15 Study Edition.
19 When we are being represented in public prayer, we need to display reverential "fear of God." (1 Pet 2:17) There may be a proper time and place for some actions that would be inappropriate at a Christian meeting. (Eccl 3:1) For instance, suppose someone sought to have all in a group link arms or hold hands during prayer. This might offend or distract some, including visitors who do not share our beliefs. Some marriage mates might discreetly hold hands, but if they embraced each other during public prayer, those who got a glimpse of such conduct might be stumbled. They might think or get the impression that the couple was focusing on their romantic relationship instead of reverence for Jehovah. Out of deep respect for him, let us therefore "do all things for God's glory" and avoid conduct that could distract, shock or stumble anyone. - 1 Cor 10:31,32; 2 Cor 6:3.